<!doctype html>
<html lang="cn">
<head>
    <meta charset="UTF-8">
    <title>聊天</title>
    <style>
        html, body, #app {
            margin: 0;
            padding: 0;
            width: 100%;
            height: 100%;
            overflow: hidden;
        }

        iframe {
            width: 49%;
            height: 49%;
            border: aquamarine 1px solid;
        }

    </style>
</head>
<body>
<div id="app">
    <iframe src="http://localhost:9008/index"></iframe>
    <iframe src="http://localhost:9008/index"></iframe>
    <iframe src="http://localhost:9008/index"></iframe>
    <iframe src="http://localhost:9008/index"></iframe>
</div>
</body>
</html>